Photo-Regeneration of Severed Gel Using Photo-Controlled Radical Polymerization

POSTER

Abstract

Using the framework of dissipative particle dynamics (DPD) simulation, we developed a novel computational model that enables photo-regeneration of the gel matrix when a significant portion of the material is severed. We considered photo-controlled radical polymerization (photo-CRP) within polymer networks with embedded iniferters (initiators for the photo-CRP reaction). These iniferters turn on the polymerization process in the presence of light with monomers and cross-linkers in the solution. This "photo-growth" allow us to effectively regenerate severed gels under the application of light. The growth process can be turned off once the polymerization is near completion, which forms a new cross-linked gel that resembles the uncut material. The polymerization rate can be modulated by altering the light intensity.

Authors

  • Awaneesh Singh

    • Univ of Pittsburgh

  • Olga Kuksenok

    • Clemson University

  • Jeremiah A. Johnson

    • Massachusetts Institute of Technology

  • Anna Balazs

    • Univ of Pittsburgh
    • Department of Chemical Engineering, University of Pittsburgh
    • Chemical Engineering Department, University of Pittsburgh, Pennsylvania 15261, USA
    • Department of Chemical Engineering, The University of Pittsburgh
    • University of Pittsburgh
    • Chemical Engineering Department, University of Pittsburgh, Pittsburgh, PA 15261, USA